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/* gnu.classpath.tools.gjdoc.expr.BinaryBitwiseExpression
Copyright (C) 2004 Free Software Foundation, Inc.
This file is part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
package gnu.classpath.tools.gjdoc.expr;
abstract class BinaryBitwiseExpression
extends BinaryExpression
{
protected BinaryBitwiseExpression(Expression left, Expression right)
{
super(left, right);
}
public ConstantExpression evaluate(Context context)
throws IllegalExpressionException
{
ConstantExpression leftValue = left.evaluate(context);
ConstantExpression rightValue = right.evaluate(context);
if (Type.LONG == leftValue.getType()
|| Type.LONG == rightValue.getType()) {
return new ConstantLong(compute(leftValue.asNumber().longValue(),
rightValue.asNumber().longValue()));
}
else {
return new ConstantInteger(compute(leftValue.asNumber().intValue(),
rightValue.asNumber().intValue()));
}
}
protected abstract long compute(long leftValue, long rightValue);
protected abstract int compute(int leftValue, int rightValue);
}
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